APA

United States, . (1918). Rural sanitation: hearings on H.R. 3549 [creating Division of Rural Sanitation in Public Health Service], Dec. 10, 1918. [Washington, D.C.]: .

Chicago

United States, . 1918. Rural sanitation: hearings on H.R. 3549 [creating Division of Rural Sanitation in Public Health Service], Dec. 10, 1918. [Washington, D.C.]: .

Harvard

United States, . (1918). Rural sanitation: hearings on H.R. 3549 [creating Division of Rural Sanitation in Public Health Service], Dec. 10, 1918. [Washington, D.C.]: .

MLA

United States, . Rural sanitation: hearings on H.R. 3549 [creating Division of Rural Sanitation in Public Health Service], Dec. 10, 1918. [Washington, D.C.]: . 1918.